Sigma reaction
[医] 西格马反应, δ反应(梅毒的絮凝反应)
🧩 词语组成解析
[计] 求和\\n[医] σ(希腊文第十八个字母)
🗣️ 情景例句
He is with someone right now. Would you hold?
他现在在会客。你可以稍等吗？
How is your family?
你的家人怎么样？
I was taking care of Sally.
我在照顾萨莉。